JP6356098B2 - Water filling device for seawater fluid pressure measuring device - Google Patents

Water filling device for seawater fluid pressure measuring device Download PDF

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JP6356098B2
JP6356098B2 JP2015165761A JP2015165761A JP6356098B2 JP 6356098 B2 JP6356098 B2 JP 6356098B2 JP 2015165761 A JP2015165761 A JP 2015165761A JP 2015165761 A JP2015165761 A JP 2015165761A JP 6356098 B2 JP6356098 B2 JP 6356098B2
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chlorine concentration
pressure
water filling
pressure conduit
water
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JP2017044524A (en
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克利 武藤
克利 武藤
浩明 勝山
浩明 勝山
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Hitachi GE Nuclear Energy Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

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Description

本発明は海水系流体圧力測定装置の水張り装置に係り、特に、原子力プラントにおいて塩素濃度のある海水系流体の圧力を測定する海水系流体圧力測定装置に備えられ、圧力導管の内部に対して水張りを行うものに好適な海水系流体圧力測定装置の水張り装置に関する。   The present invention relates to a water filling device for a sea water based fluid pressure measuring device, and more particularly, to a sea water based fluid pressure measuring device for measuring the pressure of a sea water based fluid having a chlorine concentration in a nuclear power plant, It is related with the water filling apparatus of the seawater system fluid pressure measuring apparatus suitable for what performs.

原子力プラントにおける塩素濃度のある海水系流体の圧力を測定する圧力測定装置として、海水が流れるプロセス配管の圧力を計測する圧力測定装置が知られている。   As a pressure measuring device for measuring the pressure of a seawater-based fluid having a chlorine concentration in a nuclear power plant, a pressure measuring device for measuring the pressure of a process pipe through which seawater flows is known.

この圧力測定装置は、プロセス配管に圧力導管を介して接続された計器により、海水が流れるプロセス配管の圧力を測定するものである。   This pressure measuring device measures the pressure of a process pipe through which seawater flows with a meter connected to the process pipe through a pressure conduit.

通常、原子力プラントの通常運転前には、従来から圧力導管の内部に対して水張りを実施し、計器からプロセス配管の取り合い部まで満水にすることにより、計器とプロセス配管を流れる海水が直接接触しないように配慮をしている。   Normally, before normal operation of a nuclear power plant, the instrument is filled with water from the inside of the pressure conduit, and the water from the instrument to the process pipe is filled, so that the seawater flowing through the instrument and the process pipe is not in direct contact. I am careful.

また、原子力プラントの通常運転時には、圧力導管の内部に対して水張りを実施していることにより、純水（水）が圧力導管内に満水状態に保たれているため、プロセス配管内の圧力を正確に測定できるが、プロセス配管内の海水の塩素成分が徐々に圧力導管を伝い計器側近傍まで塩素濃度が上昇する懸念がある。   In addition, during normal operation of a nuclear power plant, water is filled inside the pressure conduit, so that pure water (water) is kept full in the pressure conduit. Although it can be measured accurately, there is a concern that the chlorine concentration of seawater in the process pipe gradually passes through the pressure conduit and the chlorine concentration rises to the vicinity of the instrument.

この塩素濃度に対処（耐腐食性を考慮）するため、例えば、圧力導管にステンレス配管の中でも耐食性を考慮したステンレス配管又はライニング配管を使用したり、或いは圧力導管に非金属材料である強化プラスチック又はフッ素樹脂の配管を使用している。   In order to cope with this chlorine concentration (consideration of corrosion resistance), for example, a stainless steel pipe or a lining pipe considering corrosion resistance is used in the pressure pipe, or a reinforced plastic which is a non-metallic material is used in the pressure pipe. Fluorine resin piping is used.

また、圧力導管の塩素濃度を低く抑える方法としては、常時又は随時、圧力導管に水（純水）を供給することにより、塩素濃度を低く一定に保持する方法がある。   Moreover, as a method of keeping the chlorine concentration in the pressure conduit low, there is a method of keeping the chlorine concentration low and constant by supplying water (pure water) to the pressure conduit constantly or as needed.

なお、特許文献１には、常用電源喪失時、補給水系統損傷時においても自動的に水張りできる原子力プラントの差圧式水位計が記載されている。   Patent Document 1 describes a differential pressure type water level gauge of a nuclear power plant that can be automatically filled with water even when a regular power supply is lost or a supply water system is damaged.

特開２０１３−２１７７８４号公報JP 2013-217784 A

しかしながら、従来技術では、海水系等の圧力を計測する圧力導管の塩素濃度対策として、配管の材質選定により対応しているが、計器回りの継手材料を含め金属材料を使用する必要がある。   However, in the prior art, as a measure against the chlorine concentration of the pressure conduit for measuring the pressure of the seawater system or the like, it is necessary to select the material of the pipe, but it is necessary to use a metal material including a joint material around the instrument.

そのため、耐食性をあげるため、海水系の塩素対策として、圧力導管内に水（純水）を満水状態にして水張りを行い塩素濃度を低い状態に保つと共に、圧力計測が正しく行われる必要がある。   Therefore, in order to improve the corrosion resistance, as a countermeasure against chlorine in the seawater system, it is necessary to fill the water in the pressure conduit with water (pure water) to fill it with water to keep the chlorine concentration low, and to correctly measure the pressure.

本発明は上述の点に鑑みなされたもので、その目的とするところは、原子力プラントの塩素濃度のある海水系流体圧力の計測においても、塩素濃度を低く保つことができ、圧力計測を正確に行うことができるように水張りができる海水系流体圧力測定装置の水張り装置を提供することにある。   The present invention has been made in view of the above points, and the object of the present invention is to maintain a low chlorine concentration even in the measurement of a seawater-based fluid pressure with a chlorine concentration in a nuclear power plant, and to accurately measure the pressure. It is an object of the present invention to provide a water filling device for a seawater based fluid pressure measuring device capable of water filling so as to be performed.

本発明の海水系流体圧力測定装置の水張り装置は、上記目的を達成するために、原子力プラントにおける塩素濃度のある海水系流体が流れるプロセス配管に元弁を介して接続される圧力導管と、該圧力導管に接続され、前記プロセス配管内の圧力を計測する計器とから成る海水系流体圧力測定装置に設置され、前記圧力導管に第１の電磁弁を介して接続され、該圧力導管内に水を注入して該圧力導管の内部に対しての水張りを行う水張りタンクと、該水張りタンクに第２の電磁弁を介して接続され、該水張りタンクの水が前記圧力導管に流れ込むように該水張りタンクに空気を送る空気貯槽と、前記元弁の出口付近の前記圧力導管に接続され、該圧力導管の塩素濃度を計測する塩素濃度計と、該塩素濃度計で計測された前記圧力導管の塩素濃度値と予め設定された塩素濃度値を比較する制御装置とを備え、前記塩素濃度計で計測された前記圧力導管の塩素濃度値と予め設定された塩素濃度値を比較して、前記第１及び第２の電磁弁の開閉操作を行うことで、前記圧力導管内に前記水張りタンクから水を注入して前記圧力導管の内部に対して水張りを行う海水系流体圧力測定装置の水張り装置であって、前記塩素濃度計で計測された前記圧力導管の塩素濃度値が前記予め設定された塩素濃度値に達したら前記第１及び第２の電磁弁が開にされ、前記空気貯槽から空気を前記水張りタンクに送り、該水張りタンク内の水を前記圧力導管に注入して水張りを行うことを特徴とする。   In order to achieve the above object, the water filling apparatus of the seawater system fluid pressure measuring apparatus of the present invention comprises a pressure conduit connected via a main valve to a process pipe through which a seawater system fluid having a chlorine concentration in a nuclear power plant flows. A seawater system fluid pressure measuring device connected to a pressure conduit and comprising a meter for measuring the pressure in the process pipe, connected to the pressure conduit via a first solenoid valve, and water in the pressure conduit; A water filling tank for injecting water into the pressure conduit and a water filling tank connected to the water filling tank via a second solenoid valve so that the water in the water filling tank flows into the pressure conduit. An air storage tank for sending air to the tank, a chlorine concentration meter connected to the pressure conduit near the outlet of the main valve and measuring the chlorine concentration in the pressure conduit, and chlorine in the pressure conduit measured by the chlorine concentration meter Dark A control device for comparing the value with a preset chlorine concentration value, comparing the chlorine concentration value of the pressure conduit measured with the chlorine concentration meter with a preset chlorine concentration value, and A water filling device of a seawater system fluid pressure measuring device for performing water filling to the inside of the pressure conduit by injecting water from the water filling tank into the pressure conduit by opening and closing a second electromagnetic valve, When the chlorine concentration value of the pressure conduit measured by the chlorine concentration meter reaches the preset chlorine concentration value, the first and second solenoid valves are opened, and air is filled from the air storage tank. It is sent to a tank, and water in the water filling tank is injected into the pressure conduit to perform water filling.

本発明によれば、原子力プラントの塩素濃度のある海水系流体の圧力の計測においても、塩素濃度を低く保つことができ、圧力計測を正確に行うことができるように水張りができる。   ADVANTAGE OF THE INVENTION According to this invention, even when measuring the pressure of the seawater system fluid with a chlorine concentration of a nuclear power plant, a chlorine concentration can be kept low and water filling can be performed so that a pressure measurement can be performed correctly.

本発明の海水系流体圧力測定装置の水張り装置の実施例１を示す構成図である。It is a block diagram which shows Example 1 of the water filling apparatus of the seawater system fluid pressure measuring apparatus of this invention.

以下、図示した実施例に基づいて本発明の海水系流体圧力測定装置の水張り装置を説明する。   Hereinafter, the water filling device of the seawater system fluid pressure measuring device of the present invention will be described based on the illustrated embodiment.

図１に、本発明の海水系流体圧力測定装置の水張り装置の実施例１を示す。   FIG. 1 shows a first embodiment of a water filling apparatus for a seawater-based fluid pressure measuring apparatus according to the present invention.

該図に示す如く、本実施例の海水系流体圧力測定装置の水張り装置は、原子力プラントにおける塩素濃度のある海水系流体が流れるプロセス配管１に元弁３を介して接続される座元圧力導管２及び圧力導管４と、この圧力導管４に接続され、プロセス配管１内の圧力を計測する計器５とから成る海水系流体圧力測定装置に設置され、圧力導管４に第１の電磁弁１１を介して接続され、圧力導管４内に水を注入して圧力導管４の内部に対しての水張りを行う水張りタンク１０と、この水張りタンク１０に第２の電磁弁９を介して接続され、水張りタンク１０の水が圧力導管４に流れ込むように水張りタンク１０に空気を送る空気貯槽８と、元弁３の出口付近の圧力導管４に接続され、圧力導管４の塩素濃度を計測する塩素濃度計６と、この塩素濃度計６で計測された圧力導管４の塩素濃度値と予め設定された塩素濃度値を比較して、第１及び第２の電磁弁１１及び９に対して開閉指令を与える制御装置７とを備えて概略構成され、そして、制御装置７は、塩素濃度計６で計測された圧力導管４の塩素濃度値が予め設定された塩素濃度値に達したら第１及び第２の電磁弁１１及び９に開指令を与え、空気貯槽８から空気を水張りタンク１０に送り、水張りタンク１０内の水を圧力導管４に注入して水張りを行うものである。   As shown in the figure, the water filling device of the seawater system fluid pressure measuring device of the present embodiment is a seat pressure pipe connected via a main valve 3 to a process pipe 1 through which a seawater system fluid having a chlorine concentration flows in a nuclear power plant. 2 and a pressure conduit 4 and a measuring instrument 5 connected to the pressure conduit 4 and measuring the pressure in the process pipe 1. The first electromagnetic valve 11 is connected to the pressure conduit 4. And a water filling tank 10 for injecting water into the pressure conduit 4 to fill the inside of the pressure conduit 4 and a water filling tank 10 connected to the water filling tank 10 via a second electromagnetic valve 9. A chlorine concentration meter which is connected to an air storage tank 8 for sending air to the water filling tank 10 so that water in the tank 10 flows into the pressure conduit 4 and a pressure conduit 4 near the outlet of the main valve 3 and measures the chlorine concentration in the pressure conduit 4 6 and this chlorine A control device 7 that compares the chlorine concentration value of the pressure conduit 4 measured by the pressure meter 6 with a preset chlorine concentration value and gives an opening / closing command to the first and second electromagnetic valves 11 and 9; When the chlorine concentration value of the pressure conduit 4 measured by the chlorine concentration meter 6 reaches a preset chlorine concentration value, the control device 7 includes the first and second solenoid valves 11 and 9. Is given, and air is sent from the air storage tank 8 to the water filling tank 10 and water in the water filling tank 10 is injected into the pressure conduit 4 for water filling.

また、圧力導管４は、耐食性配管或いは耐圧ホースを使用する場合があるが、本実施例では、どちらの場合も凍結を防止するために、圧力導管４の周囲にヒータ１４を巻いて凍結を防止するようにしている。   The pressure conduit 4 may use corrosion-resistant piping or a pressure hose. In this embodiment, in order to prevent freezing in either case, the heater 14 is wound around the pressure conduit 4 to prevent freezing. Like to do.

なお、符号１２はドレン弁，１３はプラグであり、これらは、ドレン水を排出する際に弁開閉を実施し、ドレン排出するものである。   In addition, the code | symbol 12 is a drain valve, 13 is a plug, These implement a valve opening and closing, and drain drain, when drain water is discharged | emitted.

また、第１及び第２の電磁弁１１及び９は、上述したように、塩素濃度計６で計測された圧力導管４の塩素濃度値が予め設定された塩素濃度値に達したら開指令が与えられ開放するが、塩素濃度計６で計測された圧力導管４の塩素濃度値が予め設定された塩素濃度値より低い場合には、第１及び第２の電磁弁１１及び９は、全閉が基本であるが、必ずしも全閉でなくてもよい。例えば、配管内を水が少しずつ流れるようにし、塩素濃度計６で計測された圧力導管４の塩素濃度値が予め設定された塩素濃度値に達したら、第１及び第２の電磁弁１１及び９を全開するようにしてもよい。   Further, as described above, the first and second solenoid valves 11 and 9 give an opening command when the chlorine concentration value of the pressure conduit 4 measured by the chlorine concentration meter 6 reaches a preset chlorine concentration value. However, when the chlorine concentration value of the pressure conduit 4 measured by the chlorine concentration meter 6 is lower than the preset chlorine concentration value, the first and second solenoid valves 11 and 9 are fully closed. Although it is basic, it does not necessarily have to be fully closed. For example, when water is made to flow little by little in the pipe and the chlorine concentration value of the pressure conduit 4 measured by the chlorine concentration meter 6 reaches a preset chlorine concentration value, the first and second solenoid valves 11 and 9 may be fully opened.

このような本実施例の構成とすることにより、原子力プラントの塩素濃度のある海水系流体圧力の計測においても、塩素濃度を低く保つことができ、圧力導管４が凍結しない構成とすることができ、圧力測定に影響を与えないので圧力計測を正確に行うことができるように水張りができる。   By adopting such a configuration of the present embodiment, the chlorine concentration can be kept low even in the measurement of the seawater system fluid pressure with the chlorine concentration in the nuclear power plant, and the pressure conduit 4 can be configured not to freeze. Since it does not affect the pressure measurement, it can be filled with water so that the pressure measurement can be performed accurately.

また、圧力導管４内への水張り自体は、塩素濃度計６による監視によって自動化により水張りが可能であるが、万が一、電源が無い場合には第１の電磁弁１１及び第２の電磁弁９を手動で開閉動作をすることにより、電源に依存しない構成で水張り操作を可能とすることができる。   In addition, the water filling itself into the pressure conduit 4 can be carried out automatically by monitoring with the chlorine concentration meter 6, but if there is no power supply, the first solenoid valve 11 and the second solenoid valve 9 are turned on. By manually opening and closing, the water filling operation can be performed with a configuration that does not depend on the power source.

なお、本発明は上記した実施例に限定されるものではなく、様々な変形例が含まれる。即ち、上記した実施例は、本発明を分かりやすく説明するために詳細に説明したものであり、必ずしも説明した全ての構成を備えるものに限定されるものではない。また、ある実施例の構成の一部を他の実施例の構成に置き換えることが可能であり、また、ある実施例の構成に他の実施例の構成を加えることも可能である。また、各実施例の構成の一部について、他の構成の追加・削除・置換をすることが可能である。   In addition, this invention is not limited to an above-described Example, Various modifications are included. That is, the above-described embodiment has been described in detail for easy understanding of the present invention, and is not necessarily limited to one having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

１…プロセス配管、２…座元圧力導管、３…元弁、４…圧力導管、５…計器、６…塩素濃度計、７…制御装置、８…空気貯槽、９…第２の電磁弁、１０…水張りタンク、１１…第１の電磁弁、１２…ドレン弁、１３…プラグ、１４…ヒータ。   DESCRIPTION OF SYMBOLS 1 ... Process piping, 2 ... Seat pressure pipe, 3 ... Main valve, 4 ... Pressure pipe, 5 ... Instrument, 6 ... Chlorine concentration meter, 7 ... Control apparatus, 8 ... Air storage tank, 9 ... 2nd solenoid valve, DESCRIPTION OF SYMBOLS 10 ... Water filled tank, 11 ... 1st solenoid valve, 12 ... Drain valve, 13 ... Plug, 14 ... Heater.

Claims (4)

原子力プラントにおける塩素濃度のある海水系流体が流れるプロセス配管に元弁を介して接続される圧力導管と、該圧力導管に接続され、前記プロセス配管内の圧力を計測する計器とから成る海水系流体圧力測定装置に設置され、前記圧力導管に第１の電磁弁を介して接続され、該圧力導管内に水を注入して該圧力導管の内部に対しての水張りを行う水張りタンクと、該水張りタンクに第２の電磁弁を介して接続され、該水張りタンクの水が前記圧力導管に流れ込むように該水張りタンクに空気を送る空気貯槽と、前記元弁の出口付近の前記圧力導管に接続され、該圧力導管の塩素濃度を計測する塩素濃度計と、該塩素濃度計で計測された前記圧力導管の塩素濃度値と予め設定された塩素濃度値を比較する制御装置とを備え、前記塩素濃度計で計測された前記圧力導管の塩素濃度値と予め設定された塩素濃度値を比較して、前記第１及び第２の電磁弁の開閉操作を行うことで、前記圧力導管内に前記水張りタンクから水を注入して前記圧力導管の内部に対して水張りを行う海水系流体圧力測定装置の水張り装置であって、
前記塩素濃度計で計測された前記圧力導管の塩素濃度値が前記予め設定された塩素濃度値に達したら前記第１及び第２の電磁弁が開にされ、前記空気貯槽から空気を前記水張りタンクに送り、該水張りタンク内の水を前記圧力導管に注入して水張りを行うことを特徴とする海水系流体圧力測定装置の水張り装置。 A seawater system fluid comprising a pressure conduit connected via a main valve to a process pipe through which a seawater system fluid having a chlorine concentration in a nuclear power plant flows, and an instrument connected to the pressure pipe and measuring the pressure in the process pipe A water filling tank installed in a pressure measuring device, connected to the pressure conduit via a first solenoid valve, injecting water into the pressure conduit and filling the inside of the pressure conduit; Connected to the tank via a second solenoid valve, connected to the pressure reservoir near the outlet of the main valve, and an air storage tank for sending air to the tank so that the water in the tank fills the pressure conduit A chlorine concentration meter that measures the chlorine concentration of the pressure conduit; and a control device that compares the chlorine concentration value of the pressure conduit measured by the chlorine concentration meter with a preset chlorine concentration value; Total By comparing the measured chlorine concentration value of the pressure conduit with a preset chlorine concentration value and opening and closing the first and second solenoid valves, water is supplied from the water filled tank into the pressure conduit. A water filling device for a seawater-based fluid pressure measuring device that fills the inside of the pressure conduit with water,
When the chlorine concentration value of the pressure conduit measured by the chlorine concentration meter reaches the preset chlorine concentration value, the first and second electromagnetic valves are opened, and air is supplied from the air storage tank to the water filled tank. The water filling device of the seawater system fluid pressure measuring device is characterized in that the water filling is performed by injecting the water in the water filling tank into the pressure conduit. 請求項１に記載の海水系流体圧力測定装置の水張り装置において、
前記制御装置は、前記塩素濃度計で計測された前記圧力導管の塩素濃度値と前記予め設定された塩素濃度値を比較して、前記第１及び第２の電磁弁に対して開閉指令を出力すると共に、前記塩素濃度計で計測された前記圧力導管の塩素濃度値が前記予め設定された塩素濃度値に達したら前記第１及び第２の電磁弁に対して開指令を与え、前記空気貯槽から空気を前記水張りタンクに送り、該水張りタンク内の水を前記圧力導管に注入して水張りを行うことを特徴とする海水系流体圧力測定装置の水張り装置。 In the water filling apparatus of the seawater system fluid pressure measuring device according to claim 1,
The control device compares the chlorine concentration value of the pressure conduit measured by the chlorine concentration meter with the preset chlorine concentration value, and outputs an opening / closing command to the first and second electromagnetic valves. When the chlorine concentration value of the pressure conduit measured by the chlorine concentration meter reaches the preset chlorine concentration value, an opening command is given to the first and second electromagnetic valves, and the air storage tank The water filling device of the seawater system fluid pressure measuring device is characterized in that air is sent to the water filling tank and water in the water filling tank is injected into the pressure conduit for water filling. 請求項１又は２に記載の海水系流体圧力測定装置の水張り装置において、
前記圧力導管の周囲には、ヒータが巻かれていることを特徴とする海水系流体圧力測定装置の水張り装置。 In the water filling apparatus of the seawater system fluid pressure measuring device according to claim 1 or 2,
A water filling device for a seawater based fluid pressure measuring device, wherein a heater is wound around the pressure conduit. 請求項１乃至３のいずれか１項に記載の海水系流体圧力測定装置の水張り装置において、
前記圧力導管は、耐食性配管若しくは耐圧ホースから成ることを特徴とする海水系流体圧力測定装置の水張り装置。 In the water filling apparatus of the seawater system fluid pressure measuring device according to any one of claims 1 to 3,
The water filling device for a seawater-based fluid pressure measuring device, wherein the pressure conduit comprises a corrosion-resistant pipe or a pressure-resistant hose.
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